/Engine/Plugins/Runtime/MassGameplay/Source/MassSignals/Public/MassSignalTypes.h
Retrieve if it is already registered or adds new signal to the lookup and return the bitflag for that Signal  is the name of the signal to retrieve or add to the lookup.
bitflag describing the name, or 0 if max names is reached.
uint64 GetOrAddSignalName ( const [FName](API\Runtime\Core\UObject\FName) SignalName )